Given figure represents the DNA double helix model as proposed by Watson and Crick (1953). Select the option that shows correct measurements of A, B and C.

Question

Given figure represents the DNA double helix model as proposed by Watson and Crick (1953). Select the option that shows correct measurements of A, B and C. <img class="img-fluid question-image" alt="image" src="https://cdn.tardigrade.in/img/question/biology/76f84bab2b6c0c1f4ee2e790cc079c45-.png" /> (A) A - 3.4 nm, B - 0.34 nm, C - 2 nm  (B) A-34 nm, B - 3.4 nm, C - 20 nm (C) A-3.4 mathringA, B-0.34 mathringA, C-20 mathringA  (D) A - 34 mathringA, B - 3.4 mathringA, C-2 mathringA

Tardigrade Admin · Accepted Answer

The DNA helix makes one complete spiral turn every 3.4 nm and has a diameter of 2 nm. The distance between adjacent stacks is 0.34 nm.

Q. Given figure represents the DNA double helix model as proposed by Watson and Crick $(1953)$ . Select the option that shows correct measurements of $A, B$ and $C$ .

$A - 3.4 nm, B - 0.34 nm, C - 2 nm$

$A - 34 nm, B - 3.4 nm, C - 20 nm$

$A - 3.4 \overset{˚}{A}, B - 0.34 \overset{˚}{A}, C - 20 \overset{˚}{A}$

$A - 34 \overset{˚}{A}, B - 3.4 \overset{˚}{A}, C - 2 \overset{˚}{A}$

The $D N A$ helix makes one complete spiral turn every $3.4 nm$ and has a diameter of $2 nm$ . The distance between adjacent stacks is $0.34 nm$ .

Q. Given figure represents the DNA double helix model as proposed by Watson and Crick (1953). Select the option that shows correct measurements of A,B and C.

A−3.4nm,B−0.34nm,C−2nm

A−34nm,B−3.4nm,C−20nm

A−3.4A˚,B−0.34A˚,C−20A˚

A−34A˚,B−3.4A˚,C−2A˚